<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>后台管理系统</title>
    <!-- 引入 Bootstrap 5 CSS -->
    <link href="../static/css/bootstrap.min.css" rel="stylesheet">
    <!-- 引入 Font Awesome 图标 -->
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/font-awesome@4.7.0/css/font-awesome.min.css">
    <style>
        /* 基础样式 */
        body {
            font-family: 'Segoe UI', sans-serif;
            overflow-x: hidden;
        }

        /* 侧边栏样式 */
        .sidebar {
            min-height: 100vh;
            width: 250px;
            background-color: #2c3e50;
            color: white;
            transition: all 0.3s ease;
        }

        .sidebar.collapsed {
            width: 80px;
        }

        .sidebar .nav-link {
            color: rgba(255, 255, 255, 0.8);
            padding: 1rem 1.5rem;
            transition: all 0.2s;
        }

        .sidebar .nav-link:hover, .sidebar .nav-link.active {
            background-color: #34495e;
            color: white;
        }

        .sidebar .nav-link i {
            margin-right: 10px;
            width: 20px;
            text-align: center;
        }

        .sidebar.collapsed .nav-text {
            display: none;
        }

        .sidebar.collapsed .nav-link {
            padding: 1rem;
            text-align: center;
        }

        .sidebar.collapsed .nav-link i {
            margin-right: 0;
            font-size: 1.2rem;
        }

        /* 主内容区样式 */
        .main-content {
            flex: 1;
            transition: all 0.3s ease;
        }

        .sidebar.collapsed ~ .main-content {
            margin-left: 80px;
        }

        /* 顶部导航样式 */
        .top-nav {
            background-color: white;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
            z-index: 100;
        }

        /* 数据卡片样式 */
        .stat-card {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }

        /* 上传按钮样式 */
        .upload-btn-wrapper {
            position: relative;
            overflow: hidden;
            display: inline-block;
        }

        .upload-btn-wrapper input[type=file] {
            position: absolute;
            left: 0;
            top: 0;
            opacity: 0;
            width: 100%;
            height: 100%;
            cursor: pointer;
        }
    </style>
</head>
<body>
<div class="d-flex">
    <!-- 侧边栏 -->
    <div class="sidebar" id="sidebar">
        <div class="p-4 border-bottom d-flex align-items-center justify-content-between">
            <h3 class="nav-text mb-0">管理系统</h3>
            <button class="btn text-white" id="toggleSidebar">
                <i class="fa fa-bars"></i>
            </button>
        </div>
        <ul class="nav flex-column mt-3">
            <li class="nav-item">
                <a class="nav-link active" href="#dashboard">
                    <i class="fa fa-dashboard"></i>
                    <span class="nav-text">仪表盘</span>
                </a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="#users">
                    <i class="fa fa-users"></i>
                    <span class="nav-text">用户管理</span>
                </a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="#products">
                    <i class="fa fa-shopping-bag"></i>
                    <span class="nav-text">产品管理</span>
                </a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="#orders">
                    <i class="fa fa-file-text-o"></i>
                    <span class="nav-text">订单管理</span>
                </a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="#settings">
                    <i class="fa fa-cog"></i>
                    <span class="nav-text">系统设置</span>
                </a>
            </li>
        </ul>
    </div>

    <!-- 主内容区 -->
    <div class="main-content ms-0 ms-md-250">
        <!-- 顶部导航 -->
        <nav class="top-nav py-3 px-4 d-flex justify-content-between align-items-center">
            <div class="d-flex align-items-center">
                <button class="btn me-3 d-md-none" id="mobileToggle">
                    <i class="fa fa-bars"></i>
                </button>
                <h5 class="mb-0">仪表盘</h5>
            </div>
            <div class="d-flex align-items-center">
                <div class="me-3 position-relative">
                    <i class="fa fa-bell-o text-secondary"></i>
                    <span class="position-absolute top-0 right-0 w-2 h-2 bg-danger rounded-circle"></span>
                </div>
                <div class="d-flex align-items-center">
                    <img src="https://picsum.photos/id/1005/40/40" class="rounded-circle me-2" width="40" height="40"
                         alt="用户头像">
                    <span class="d-none d-md-inline">管理员</span>
                </div>
            </div>
        </nav>

        <!-- 页面内容 -->
        <div class="p-4">
            <!-- 数据统计卡片 -->
            <div class="row mb-4">
                <div class="col-md-3 mb-3">
                    <div class="stat-card bg-primary text-white p-4 rounded-3">
                        <div class="d-flex justify-content-between">
                            <div>
                                <p class="mb-1">总用户</p>
                                <h3 class="mb-0">2,541</h3>
                            </div>
                            <i class="fa fa-users fa-2x"></i>
                        </div>
                        <div class="mt-2 text-sm">
                            <span class="text-success"><i class="fa fa-arrow-up"></i> 5.2%</span> 较上月
                        </div>
                    </div>
                </div>
                <div class="col-md-3 mb-3">
                    <div class="stat-card bg-success text-white p-4 rounded-3">
                        <div class="d-flex justify-content-between">
                            <div>
                                <p class="mb-1">总订单</p>
                                <h3 class="mb-0">1,892</h3>
                            </div>
                            <i class="fa fa-file-text-o fa-2x"></i>
                        </div>
                        <div class="mt-2 text-sm">
                            <span class="text-white"><i class="fa fa-arrow-up"></i> 12.8%</span> 较上月
                        </div>
                    </div>
                </div>
                <div class="col-md-3 mb-3">
                    <div class="stat-card bg-warning text-white p-4 rounded-3">
                        <div class="d-flex justify-content-between">
                            <div>
                                <p class="mb-1">总收入</p>
                                <h3 class="mb-0">¥35,621</h3>
                            </div>
                            <i class="fa fa-money fa-2x"></i>
                        </div>
                        <div class="mt-2 text-sm">
                            <span class="text-white"><i class="fa fa-arrow-up"></i> 8.5%</span> 较上月
                        </div>
                    </div>
                </div>
                <div class="col-md-3 mb-3">
                    <div class="stat-card bg-info text-white p-4 rounded-3">
                        <div class="d-flex justify-content-between">
                            <div>
                                <p class="mb-1">转化率</p>
                                <h3 class="mb-0">12.5%</h3>
                            </div>
                            <i class="fa fa-exchange fa-2x"></i>
                        </div>
                        <div class="mt-2 text-sm">
                            <span class="text-danger"><i class="fa fa-arrow-down"></i> 1.2%</span> 较上月
                        </div>
                    </div>
                </div>
            </div>

            <!-- 上传区域和表格 -->
            <div class="row">
                <!-- 左侧上传区域 -->
                <div class="col-md-4 mb-4">
                    <div class="card p-4 h-100">
                        <h5 class="card-title mb-4">文件上传</h5>

                        <!-- 单文件上传 -->
                        <div class="mb-4">
                            <label class="form-label">上传用户头像</label>
                            <div class="upload-btn-wrapper">
                                <button class="btn btn-outline-primary w-100">
                                    <i class="fa fa-upload me-2"></i>选择图片
                                </button>
                                <input type="file" accept="image/*" id="avatarUpload"/>
                            </div>
                            <div class="mt-3" id="avatarPreview" style="display: none;">
                                <img src="" alt="预览图" class="img-thumbnail" width="100%">
                            </div>
                        </div>

                        <!-- 多文件上传 -->
                        <div class="mb-4">
                            <label class="form-label">批量上传产品图片</label>
                            <div class="upload-btn-wrapper">
                                <button class="btn btn-outline-secondary w-100">
                                    <i class="fa fa-files-o me-2"></i>选择多个文件
                                </button>
                                <input type="file" accept="image/*" multiple id="productUpload"/>
                            </div>
                            <div class="mt-3" id="fileList"></div>
                        </div>

                        <!-- 上传按钮 -->
                        <button class="btn btn-success w-100" id="submitUpload">
                            <i class="fa fa-check me-2"></i>确认上传
                        </button>
                    </div>
                </div>

                <!-- 右侧数据表格 -->
                <div class="col-md-8">
                    <div class="card">
                        <div class="card-header d-flex justify-content-between align-items-center">
                            <h5 class="mb-0">最近订单</h5>
                            <button class="btn btn-sm btn-outline-primary">
                                <i class="fa fa-download me-1"></i>导出数据
                            </button>
                        </div>
                        <div class="card-body">
                            <div class="table-responsive">
                                <table class="table table-hover">
                                    <thead>
                                    <tr>
                                        <th>订单编号</th>
                                        <th>用户</th>
                                        <th>金额</th>
                                        <th>状态</th>
                                        <th>操作</th>
                                    </tr>
                                    </thead>
                                    <tbody>
                                    <tr>
                                        <td>ORD-2023-001</td>
                                        <td>张三</td>
                                        <td>¥299.00</td>
                                        <td><span class="badge bg-success">已完成</span></td>
                                        <td>
                                            <button class="btn btn-sm btn-outline-info"><i class="fa fa-eye"></i>
                                            </button>
                                            <button class="btn btn-sm btn-outline-danger"><i class="fa fa-trash"></i>
                                            </button>
                                        </td>
                                    </tr>
                                    <tr>
                                        <td>ORD-2023-002</td>
                                        <td>李四</td>
                                        <td>¥599.00</td>
                                        <td><span class="badge bg-warning">处理中</span></td>
                                        <td>
                                            <button class="btn btn-sm btn-outline-info"><i class="fa fa-eye"></i>
                                            </button>
                                            <button class="btn btn-sm btn-outline-danger"><i class="fa fa-trash"></i>
                                            </button>
                                        </td>
                                    </tr>
                                    <tr>
                                        <td>ORD-2023-003</td>
                                        <td>王五</td>
                                        <td>¥1299.00</td>
                                        <td><span class="badge bg-danger">已取消</span></td>
                                        <td>
                                            <button class="btn btn-sm btn-outline-info"><i class="fa fa-eye"></i>
                                            </button>
                                            <button class="btn btn-sm btn-outline-danger"><i class="fa fa-trash"></i>
                                            </button>
                                        </td>
                                    </tr>
                                    <tr>
                                        <td>ORD-2023-004</td>
                                        <td>赵六</td>
                                        <td>¥89.00</td>
                                        <td><span class="badge bg-primary">已付款</span></td>
                                        <td>
                                            <button class="btn btn-sm btn-outline-info"><i class="fa fa-eye"></i>
                                            </button>
                                            <button class="btn btn-sm btn-outline-danger"><i class="fa fa-trash"></i>
                                            </button>
                                        </td>
                                    </tr>
                                    </tbody>
                                </table>
                            </div>

                            <!-- 分页 -->
                            <nav class="mt-3">
                                <ul class="pagination justify-content-center">
                                    <li class="page-item disabled">
                                        <a class="page-link" href="#" tabindex="-1">上一页</a>
                                    </li>
                                    <li class="page-item active"><a class="page-link" href="#">1</a></li>
                                    <li class="page-item"><a class="page-link" href="#">2</a></li>
                                    <li class="page-item"><a class="page-link" href="#">3</a></li>
                                    <li class="page-item">
                                        <a class="page-link" href="#">下一页</a>
                                    </li>
                                </ul>
                            </nav>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<!-- 引入 Bootstrap 5 JS 和 Popper -->
<script src="../static/js/bootstrap.min.js"></script>
<script>
    // 侧边栏切换功能
    document.getElementById('toggleSidebar').addEventListener('click', function () {
        const sidebar = document.getElementById('sidebar');
        sidebar.classList.toggle('collapsed');
    });

    // 移动端侧边栏切换
    document.getElementById('mobileToggle').addEventListener('click', function () {
        const sidebar = document.getElementById('sidebar');
        sidebar.classList.toggle('collapsed');
    });

    // 头像上传预览
    document.getElementById('avatarUpload').addEventListener('change', function (e) {
        const file = e.target.files[0];
        if (file) {
            const reader = new FileReader();
            reader.onload = function (event) {
                const preview = document.getElementById('avatarPreview');
                preview.querySelector('img').src = event.target.result;
                preview.style.display = 'block';
            };
            reader.readAsDataURL(file);
        }
    });

    // 多文件上传列表展示
    document.getElementById('productUpload').addEventListener('change', function (e) {
        const files = e.target.files;
        const fileList = document.getElementById('fileList');
        fileList.innerHTML = ''; // 清空现有列表

        if (files.length > 0) {
            const list = document.createElement('ul');
            list.className = 'list-group';
            for (let i = 0; i < files.length; i++) {
                const item = document.createElement('li');
                item.className = 'list-group-item d-flex justify-content-between align-items-center';
                item.innerHTML = `
            <span><i class="fa fa-file-image-o me-2"></i>${files[i].name}</span>
            <span class="badge bg-secondary">${(files[i].size / 1024).toFixed(1)}KB</span>
          `;
                list.appendChild(item);
            }
            fileList.appendChild(list);
        }
    });

    // 上传按钮点击事件
    document.getElementById('submitUpload').addEventListener('click', function () {
        // 模拟上传成功提示
        const toast = new bootstrap.Toast(document.createElement('div'));
        toast._element.className = 'toast text-white bg-success position-fixed bottom-4 right-4';
        toast._element.innerHTML = `
        <div class="d-flex">
          <div class="toast-body">文件上传成功！</div>
          <button type="button" class="btn-close btn-close-white me-2 m-auto" data-bs-dismiss="toast"></button>
        </div>
      `;
        document.body.appendChild(toast._element);
        toast.show();
    });
</script>
</body>
</html>